He is doing 100% better. He was scratching and biting a bit last night and this morning so I was concerned but his bumps have completely cleared, and he hasn't scratched since 6am.
I did give him one more conditioning bath just to keep him moisturized through the next very cold days and he seems to be cured. After viewing all your comments and pictures I do believe he got into something that caused an allergic reaction(as he loves to pick up anything and everything that is in his reach). I'm more cautious now with leaving things closed and up high so hopefully he doesn't break out again, but because of your comments I know what to do in case he does!
Now he's back to normal with a shiny coat ^__^